.header {
    font-size: inherit;
    background: #fefefe;

    .fix_header {
        position: fixed;
        top: 0;
        z-index: 1;
        background: #fefefe;
        width: 100%;
        left: 50%;
        transform: translateX(-50%);
        z-index: 10;
    }
    .box {
        height: 104px;
    }
}
